CVE-2025-13553Public exploitNetwork attack vector

Management-interface crash via unchecked submit-url copy

Published Nov 23, 2025 · Updated Nov 24, 2025

Stack buffer overflow in D-Link DWR-M920 1.1.50 allows remote authenticated users to crash its web interface via a crafted POST request. The sub_41C7FC function passes submit-url to strcpy without length checking, overwriting adjacent stack memory. The proof-of-concept author reports unauthenticated reachability, contrary to the CNA's low-privilege rating; the demonstrated result is a web-service crash, not code execution.

CVSS severity8.8
High
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack buffer overflow in D-Link DWR-M920 1.1.50 allows remote authenticated users to crash its web interface via a crafted POST request. The sub_41C7FC function passes submit-url to strcpy without length checking, overwriting adjacent stack memory. The proof-of-concept author reports unauthenticated reachability, contrary to the CNA's low-privilege rating; the demonstrated result is a web-service crash, not code execution.

The record

CVE
CVE-2025-13553
Published
Nov 23, 2025
Updated
Nov 24, 2025
Vendor
D-Link
Product
DWR-M920
Classifications
CWE-119, CWE-120, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.1.50

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

D-Link · DWR-M920version=1.1.50

Published CVSS scores

8.8VulDB via NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0VulDB via NVDAV:N/AC:L/Au:S/C:C/I:C/A:C
7.4VulDB via NVDCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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